That puts the cartridge in a position where the extended feed ramp improves the breech-loading design. $101.95. The ramps on the regular rifle-type extension are cut just to the edge of the extension. I prefer them. It is milled out of 6061 T6. This is one time it's better to go a little too far than to leave an edge for the . Barrel customizations are also available. The M4 Style Feed ramps And Barrel Extension Provide Consistent Feeding And The Matte Black Manganese Phosphate Finish resists External Corrosion And OxidationLength: 14.70"Model: AR-15Finish: Manganese PhosphateBarrel Type: Carbine LengthBarrel Features: Chrome-LinedManufacturer: FN Mfg Number: 20-100405Model: AR-15 . If you want precision, dont look to the mil-spec gun, look to the one that is popular in 3-gun competitions, at Thunder Ranch, etc. So the engineers lowered the feed rampa into the receiver. Dec 17, 2020. Your discussions, feedback and comments are welcome here as long as they are relevant and insightful. pm me at BOG or PG, or get in touch with my number 09177542777 if you're interested. 2. Some, me included, have said that the M4 ramps are a help to some of the larger-diameter cartridges in use, such as 6.5 Grendel or .22 Nosler. Go slow and you'll be done in no time. It's best to have M4 ramps on both the upper and barrel. True, which is why they're not even needed in semi autos. Anything else you want to share about M4 clones would be appreciated, especially when it comes to a reliable rifle. - The Shooter's Log, 2012 SHOT Show Special Report: Daniel Defense DDM4 V5 in .300 Blackout and a Factory SBR - The Shooter's Log, 2012 SHOT Show Special Report: SOG Armory Predator Rifle - The Shooter's Log, Surefire's 100-Round MAG5-100: The Highest Capacity AR-15 Magazine - The Shooter's Log, Throwback Thursday: Taurus Judge Range Report, ATI Milsport SGA 410 All the Advantages of an AR in .410, Ruger SR1911 LW Commander The Lightweight .45 ACP, Rifle Hack: Sighting for 100 Yards at a Distance of 25 Yards, Throwback Thursday: All About Bullet Grain. You absolutely do not want it the other way around however. You have a rifle barrel. Product Details Douglas 18" Flat Dark Earth Cerakoted 416 stainless steel barrel with 1-7 twist and M4 feed ramps. We have four combinations here: I put together a second AR9 that is having a feeding issue, even if using similar parts as the first one. Supposedly you'll only notice issues with rapid/auto fire with a configuration like this. Married pretty well with my Seekins machined lower. Upload or insert images from URL. Snipers Hide is a community of Snipers of all kinds, focusing on long range shooting, accuracy, and ballistics. I replaced the M4 feed ramp barrel with a monolithic feed ramp barrel and no more problems. Some suggest taking a grinder to the extension area. I'm planning on replacing my forearm with a Larue 13.5. You need to match up barrels to receivers for optimum performance. If this is your first visit, be sure to I am glad to know that I need to look for changes in design and the differences in the A2 and A4 feed ramp / rails. Was sort of worried about how it would run with an 11.5" barrel and mismatched ramps, but it sounds like it should be good to go either way. Is it kosher to add M4 feed ramps to a standard upper to match an m4 ramped barrel? Should not be too hard. For new construction barrels only. DSA has fat top, Mueller, non feed ramp uppers for $40. Brevity matters. 338 and others not the .308 76251 or 6.5 creedmore which o think should have a.30cal feed ramp.? With the bcg moving that much faster, the magazine springs were having a hard time supplying the rounds fast enough, AS WELL AS the tips of the rounds were digging into the feed ramps and catching. I didn't forsee that we'd ever see the day when replacement parts would be so hard to get. It's best to use rifle/rifle combo or M4/M4. Barrel Length: 16" Barrel Material: 4150V Chrome Moly Vanadium Steel Barrel Finish: Phosphate Barrel Profile: M4 Chamber: 5.56 NATO Twist Rate: 1 in 7" Extension: M4 Gas System: Carbine-Length Gas Block Type: Low Profile .750" Diameter Upper Receiver: Forged 7075 T6 Aluminum Receiver Style: M4 Flat top with feed ramps Receiver Finish: Hardcoat Anodized On AR9's, I understand the distance between the Mag Follower and the Feed Ramp is a known complication in the design. FFL Fax: 866-721-8691. I was planning on using a Daniel Defense 14.5 pencil barrel, because like the C8 they are CHF, lightweight profile, and .750 at the FSB (And also because quality carbine pencil barrels with .625 gas blocks seem to be in short supplyor else I'd just build a 723 clone.) . Konza Defender M-LOK 5.56 16" Rifle 1x7 FEATURES: 16" 4150 Nitride 1x7 5.56 Barrel T-Marked Upper with M4 Feed Ramps Steel Micro Gas Block, and Carbine Length Gas Tube 15" 7075 T6 Aluminum Free Float M-LOK Hand Guard A2 Muzzle Break BCG is an M16 Style Nitride QPQ Finish Charging Handle Mil-Spec 6 Position Mil-Spec Diameter Stock Both. Notify me of follow-up comments by email. Now, theres nothing wrong at all with a little polish on any and all feed ramps, which can not only be done fairly easily, it can be successfully done by most at home. The first reason is that they are, indeed, better. The difference between standard feed ramps and M4 ramps is easy to see. If I can correct an issue before it's an issue that is preferred. We want you, our readers, to be able to make informed decisions. An upper without feed ramps can be used with a barrel that has them as the majority of the ramp is on the barrel extension. When carrying out feed ramp polishing, it is crucial to prioritize the frame's angles, which is a critical part of the feed ramp. The M4 style feed ramps and barrel extension provide consistent feeding and the matte black Manganese Phosphate finish resists external corrosion and oxidation. To conclude, the M4 feed ramps bring a lot of improvements to the AR-platform firearms. Please be respectful of others. - The Shooter's Log, 2012 SHOT Show Special Report: Del-Ton TRX Rifle and More! I suggest you get a rifle receiver. It has 2 ramps cut into the receiver to help the rounds feed into the chamber. Bullets tend to bump, snag, and stub on these guns. Reddit and its partners use cookies and similar technologies to provide you with a better experience. Either way is good and both types work great with semi auto only guns. I don't have much to add re: feed ramps, but. BEFORE YOU GO MODIFYING IT, check your headspace.I have a Gibbz upper in my junk drawer because the upper -- for some reason -- wouldn't allow a perfectly good bolt (as checked by Criterion) to headspace correctly on a Criterion barrel, with the bolt installed in the carrier. Just put it in and shoot it. so im thinking I might as well just get the unramp upper. For instance I was looking at the BCM upper receiver, and it said it had M4 feed ramps machined into the upper. You wrote that much to make a point that should have taken about 100 words? if you are OK with 3MOA, you might go 20,000 rounds! hey bro nice to see you here!!! Then the manufacturer discontinued the barrel. Polishing the edges of the chamber mouth to remove the edges of that chamfer will. i have the rifle barrel. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Reach in through the ejection port and slide the on deck cartridge about 1/4 inch forward and observe the tip of the bullet in relationship to the barrel extension. M4 feed ramps. Experts advise on 31 degrees+30 minus-zip. M4 can better explain their benefit, although they help with more reliable feeding. May 17, 2008 in The Armorer. One of the AR15 engineers under Gene Stoner pretty much said that the M4 isn't a good platform, especially once the gas port erodes a bit. Its not a big deal but still an important thing to remember and understand. What's the difference? The only other time it seems to help is if the mag is feeding the rounds with the bullet slightly angled lower than normal. AR9 - Help diagnosing feeding issue. The ramp angles are different and changing the profile of the extension doesn't make it something it isn't. The M4 ramps, if I am not mistaken, were originally made to help reduce malfunctions on the M4 carbine. again, Thanks. The A2's are pretty reliable guns, but trashed mags can cause them to have malfunctions also. If you aren't 110% comfortable with doing the job, and you do not have all the tools and equipment to do it properly, then have a smith do it for you. All comments are held for moderation and will appear after approval. Powered by Invision Community, M4-style barrel extension with Rifle-type upper. colt A1E1 733 uppers didn't have extended carbine feedramps ? All uppers are assembled cleaned and tested before shipping. This space is for pictures of "retro" Stoner rifles and completed or partial retro AR-15 builds, as well as discussions about either. Interesting reading. Regular feed ramps are cuts into the barrel extension only, which allows guiding the round into the chamber during loading, making them a fundamental feature of many breech-loading firearm designs. Mil-spec is good for the masses, and if you want the job done it is a great start. Does NOT include pin I have a non ramped barrel in a ramped upper, feeds fine. We reserve the right to edit as appropriate, delete profane, harassing, abusive and spam comments or posts, and block repeat offenders. The magazine lips cannot move, so with these larger diameter cartridges, the bullet tips down lower about the centerline of the bore (half of the diameter increase to be exact). By The rifle receiver, doesn't have ramps on the receiver, they are only cut into the barrel. Went back to the sellers website and found I was not the only one with problems. To measure just where the round makes impact on the feed ramps, I did not use any sort of micrometer to measure. Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. The rifle-platform M16s dont use them. Notice how the ramp starts on the barrel extension and not in the receiver. Single Action and Double Action Which One Is Better For You? I like getting another Upper idea then you could end up with two rifles! pictures would help. The Fora platform includes forum software by XenForo. The angle is going to be key, alot of people attempt to mimic the angle of the barrel feed ramps, this is incorrect. Previous. Create an account to follow your favorite communities and start taking part in conversations. Whether they materialize or not depends on the direction of the mismatch. It's near impossible to replace the carry handle upper I have these days, and finding a colt chrome lined 20" light weight barrel isn't a walk in the park either. 's blog. When I function tested it the first time with live half-jacketed rounds I had the worst FTF jam I have ever experienced. But, as with anything else, this work can go too far. Founded by Frank Galli in 2000, Snipers Hide has been offering informational videos, podcasts, and other support to its users in one location. An older-version (or A2-style) feed ramp is cut only on the barrel extension itself (top). All things being equal and having used both weapons extensively, Id rather have the feed Ramps. The barrel blanks available are made from 416 Stainless Steel. So I called. I'm lookin for a clear definition as to what they are, and what they do to enhance a given rifle's performance? They guide the bullet up and into the chamber. M4 M-4 Feed Ramp Jam with 55 gr grain Bullets, Solution, Fix, AR15 AR-15 Stuck Cartridge iowaunemployment 21K views 10 years ago Comparing AR15 barrels -Faxon vs. Bear Creek arsenal-. It may not display this or other websites correctly. *Must have a registered ARFCOM account to win. I have seen it done many, MANY times and if done right, it works/functions 100% without issue. Just because you can, doesn't mean you should. I found the article very informative. Mind shooting me a link where I can pick on a C marked A1 carry handle for $150? Guess what? This has been my concern with modifying the aluminum parts. ago KrinkyDink2 9 hr. Ok, So, in short, I've got a barrel on my Armalite upper (with M4 feed ramps in the upper) that has standard AR-15 (non-M4) ramps. This gave it a longer point for the magazine to allow the rounds to come out of the magazine and feed into the chamber. Seems counter intuitive to recommend an M4 cut upper, especially if the barrel Im looking at has the rifle feed ramp (not M4 cut). M4 extension with .350 M4 style feed ramps 11 Degree Target Crown Threaded Muzzle 5/8"x24 TPI Weight: 26.5 ounces BrianEnos.com Check often for fit. When you need to nail something you use a hammer not a wrench. I've seen uppers with and without anodizing on M4 ramps . it seems to me to be about 50/50 with and without. By Yamil Sued August 6, 2021. I've thought about it myself, and I'd like to see test results if any exist, displaying what reliability effect M4 ramps have on other barrel lengths. I'm a machinist in the aerospace industry and lucky enough to have unrestricted access to a really nice machine shop so the modification from rifle to M4 feed ramps is no sweat, I've done it once before a few years back with a .250" carbide cutter in the mill for a friend and it came out looking indistinguishable from a true M4 extension. JavaScript is disabled. Press J to jump to the feed. Some argue that, factually, its a step to enable a smoother feeding. In case My barrel is rifle ramp it won't be so bad after all. Feed ramps on barrel extensions are a good example. You can modify the upper, but bear in mind that the un-anodized aluminum surface will be very soft and prone to wear if your particular bullet hits it frequently. The barrel is supposed to have the M4 feed ramps. I use it for hunting dogs only. I bought a .458 upper to go with it, with the extra internal clearance cut before anodizing. No need to alter the upper. The Mission of Cheaper Than Dirt! Your link has been automatically embedded. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. It's not worth changing the barrel extension on an already finished barrel, getting the new barrel extension to line up correctly with the gas port will probably cost more in gunsmithing/machining fees than buying a new barrel. If I have a rifle ramp upper and get the barrel later and coincidentally will have an m4 ramp. Sent back again. I've seen several places say you just need a 1/8" chainsaw sharpening bit and a Dremel to fix it. Oh well, as I tell my lovely and understanding bride, guns are relatively free. it's the ammo and training that cost real money. I'd get jams from bullets hitting the back of the upper so I took a small round file and made the M4 ramps in the upper. Editors Note: This article was originally published in January of 2019. I would only add the feed ramps to the receiver if I had feeding issues, which you should not have. However the DD 14.5 are ideally meant to mate up with M4 style upper receiver feedramps. All this basically means is that the ramps continue from the barrel extension down through the upper receiver tonthe magazine. I'll probably build a pistol out of this one. M4 Feed ramps on barrel extensions are a solid example. Shopping with us is absolutely safe - you never have to worry about credit card safety when shopping here Share your latest AR build or photos from the range with #RangeDayFriday for a chance to win a new firearm! Full M4 feed ramps start on the upper and continue onto the barrel extension. Other selections are available for upper, bolt and carrier, charging handle, handguards, flash hiders, and gas blocks. I recommend putting any AR-platform firearm together with a matched M4 barrel extension and upper receiver set, just because you can. In short, if you have a Dremmel you can do it yourself. They aid in feeding the round into the chamber from the magazine more easily, which make uppers and barrel extension matched. and add them to non-m4 barrels.? BUT if you find someone to grind your feed ramps and they do a good job, post it up and let us know. The upper I want to rebarrel is modified for Service Rifle competition so it's not quite as cheap as buying another $89 upper from Aero. Home Firearms Figuring Out Feed Ramps. 410 stainless is also harder and more corrosion resistant than conventional 416 stainless found in other commercially available precision barrels. They offer a lower, more extensive, and smoother entry for any round of ammo, whether its necessary or not. FWIW one of my rifles has M4 feed ramps on the barrel and no M4 feed ramps on the upper and it has functioned just fine. M16's fed pretty well before the M4 feed ramps were introduced. Here's some info from Randall Rauch aka www.ar15barrels.com, if your barrel extension has M4 ramps you should have an upper receiver also with the ramps. I have a 723 build (w/ C7 upper) and a 727 build (A2 upper) that use 14.5" Colt M4 barrels. LanceRiley, As suggested, its best to match the upper and barrel extension no worries that way. Instead, I just loaded up each mag with two rounds, and pushed the rounds forward by hand until the tip of . Ar-15 Manufacturers Should Be Avoided: Which Should You Buy? Don't forget read more information about it here! Moreover, telling someone that an extension can be modified, while not a lie, is nothing more than mental masturbation when your post contains a caveat for having the knowledge and proper tools. Machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ corrosion resistant finish and QPQ coated M4 feed ramp extension. There is no way to make a carbine barrel extension out of a rifle barrel extension, period, full stop. M4 16", SBN, 1:7, 5.56 NATO Barrel Specifications: - Caliber: 5.56 NATO (.223 REM) - Gas Tube: Car Add to Cart. Please allow 5~10 days for assembly and testing before ship date. It's going to a gunsmith to be shortened and rethreaded anyways, can they just grind/polish the feed ramps to match or is it more involved than that? VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. This USGI modification was done to both the barrel extension and the upper receiver, creating a longer and steeper feed ramp. Id just get one for that barrel and find a barrel with m4 extension for the upper you already have. aaargh.. that's the setup I hate to see. I read in Bravo company that there are 2 kinds of flat top upper. Only took a few minutes. These units actually feature the NON-F-Marked (correct) front sight base. My experience with ARs is all A-1s. However, if youre wanting to rebarrel a non-M4-cut upper with an M4 feed-ramp equipped barrel, or going the other direction: you have a new upper thats been relieved to fit with the M4 ramps, and a non-M4-cut barrel extension, and that wont work! By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. M4 Feed ramps on barrel extensions are a solid example. They are better! I guess it depends on what your relationship to the necessary shop activities is. "C" stamp and CAGE code available. Hasn't misfed yet, through initial break in up through 1k rounds, and that's mag length ammo. Having been in military supply, I know that what the mil-spec means: it gets the minimum job done for thousands (millions) of parts/systems. AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. I checked what I have now. My factory JP CTR-02 has the appearance of the bottom right picture in the post above, M4 barrel extension in a rifle receiver, and there is not a mark on the aluminum under the barrel extension. Don't ever put non M4 ramped barrel on a M4 ramped upper receiver. The Bullet ~ Handguns, Rifles and Shotguns, http://thearguys.com/ar-facts/m4-feed-ramps/. Lol. Full M4 feed ramps are on both the upper and barrel extension. Feeds flawlessly. I'd get jams from bullets hitting the back of the upper so I took a small round file and made the M4 ramps in the upper. The mil actually only specs M4 feed ramps for use in its M4s. I think you will find that the tip of the bullet clears the M4 cuts in the upper receiver by a wide margin. Most work performed while-you-wait, evening and saturday appointments available. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. What is an m4 feed ramp? I just need a little guidance on this and I'm having trouble getting good results from Google. You also repeated yourself. Feels like a silly question now that it makes sense. So there's a lot more going on with rounds bouncing up and down in the mags etc. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Owning Best Ruger SR9c Accessories Can Change Your Life. 30 cal. I wont buy a barrel that isnt a wylde 223 556 but Im only now noticing. A4 Complete Upper Receiver. So, what youre saying is that an M16 upper (not M4 cut) will work with either barrel, but an M4 cut upper will only work with an M4 cut barrel. Installing a Luth-AR Rifle Buffer Tube and an A2 Stock #1041. M4 barrel to non M4 receiver is fine, but not the other way around. If your mag catch is at Spec height, you should not have a problem with an M4 cut barrel in a rifle receiver. Either way is good and both types work great with semi auto only guns. FN AR-15 5.56X45mm Nato . Can I use a barrel with M4 feed ramps with an upper that isnt M4 matched? Rifles, Uppers, Lowers, Barrels, and more, [ARCHIVED THREAD] - Rifle vs m4 feed ramps, http://i135.photobucket.com/albums/q125/PursuitSS/Postings%20photos/c0d26170b75c3e6f9ea65a7d0862247e.jpg.
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